Access 51.net. 虎翼网 - 虎翼网（51.net）：超级虚拟主机(Docker主机)，云空间，虚拟主机，域名注册，16年服务！

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

69/100

10%

LCP (Largest Contentful Paint)

Value8.8 s

1/100

25%

SI (Speed Index)

Value9.4 s

12/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

51.net

16555 ms

style.css

1852 ms

msgb.css

604 ms

titlecd.css

605 ms

main.js

954 ms

Our browser made a total of 117 requests to load all elements on the main page. We found that 96% of them (112 requests) were addressed to the original 51.net, 2% (2 requests) were made to Hm.baidu.com and 1% (1 request) were made to Kxlogo.knet.cn. The less responsive or slowest element that took the longest time to load (16.6 sec) belongs to the original domain 51.net.

Content Size

145.9 kB

After Optimization

26.9 kB

In fact, the total size of 51.net main page is 145.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 20% of websites need less resources to load. HTML takes 118.9 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 98.5 kB

Original 118.9 kB
After minification 99.7 kB
After compression 20.3 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 19.2 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 98.5 kB or 83% of the original size.

Image Optimization

-13%

Potential reduce by 413 B

Original 3.1 kB
After minification 2.7 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, 51 needs image optimization as it can save up to 413 B or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-84%

Potential reduce by 20.0 kB

Original 23.9 kB
After minification 13.5 kB
After compression 3.9 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 20.0 kB or 84% of the original size.

Requests Now

113

After Optimization

The browser has sent 113 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

These are opportunities to improve keyboard navigation in your application.

High

Some elements have a [tabindex] value greater than 0

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

High

Browser errors were logged to the console

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

ZH
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51.net can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that 51.net main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

51.net

Open Graph description is not detected on the main page of 51. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks:

Report Summary

Performance

Accessibility

Best Practices

SEO

虎翼网 - 虎翼网（51.net）：超级虚拟主机(Docker主机)，云空间，虚拟主机，域名注册，16年服务！

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

51.net

style.css

msgb.css

titlecd.css

main.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

51.net

style.css

msgb.css

titlecd.css

main.js

jx.js

actstyle.js

quick_login.js

pic_show.js

topnews.php

Jcookie.js

seallogo.dll

blank

dl_06.gif

close1.gif

dl_06_bj.gif

dl_07.gif

kszc.gif

tj.gif

dl_03.gif

wjmm.gif

dll1.gif

dll.gif

authcode.php

bj.gif

logo.gif

xs.gif

go.gif

info.gif

blank.gif

menu_left.gif

menu_right.gif

menu_bg.gif

menu_on_left.gif

menu_on_right.gif

menu_line.gif

new.gif

800.gif

bt_05.gif

bt_06a.gif

bt_06b.gif

bt_07.gif

search.gif

zhognwen.jpg